ZIP Code 85122 · Casa Grande, Arizona
Pinal County · 23,884 counted · 2 districts
Each percentage here is a share of the 23,884 homes counted in ZIP Code 85122, not the chance that any one address is in that district. Enrollment follows the street: two houses on opposite sides of the same road can be in different districts, and only the district office can say which.
The districts named for the early grades in ZIP Code 85122, Casa Grande, Arizona are not the districts named for high school, and the set changes in both directions: 1 district arrives for high school that no elementary answer names, and 1 runs the early grades and stops. 2 districts hold the 23,884 homes counted here between them, and Casa Grande Elementary and Casa Grande Union High hold the most of them, 23,884 homes each. The area sits in Pinal County, Arizona.
One district covers the early grades
Casa Grande Elementary District is the only grade school district named for ZIP Code 85122 at all, and it holds 23,884 of the 23,884 homes counted in the area. Casa Grande Elementary is named here for grade school and not for high school.
Every track below is 35 cells long and stands for all 23,884 homes counted in ZIP Code 85122, so one cell is 682 homes, rounded to the nearest whole cell. Cells lit solid are the homes one district holds, and the unlit cells are the homes held by the other districts in the same list.
- Casa Grande Elementary District23,884 of 23,884 homes100%
One district covers high school
Casa Grande Union High School District is the only high school district named for ZIP Code 85122 at all, and it holds 23,884 of the 23,884 homes counted in the area. Casa Grande Union High is named here for high school and not for the early grades.
- Casa Grande Union High School District23,884 of 23,884 homes100%
Have a street address?
A ZIP Code names every district that can serve the area; a street address settles which one serves a home. The Census Bureau geocoder takes an exact address and returns its school districts from the current boundary files, free and with no account.
Check an exact address with the Census Geocoder
Then confirm it with the district office. Each district named here, with its NCES district ID, website and phone:
- Casa Grande Elementary District NCES ID 0401710 cgesd.org (520) 836-2111
- Casa Grande Union High School District NCES ID 0401740 cguhsd.org (520) 316-3360
The set of names changes in both directions
Casa Grande Union High is named for high school here and for no elementary grades, and Casa Grande Elementary runs the early grades and no more. An address on the wrong street can therefore change district at the change of grade and land in a district that was never part of its elementary answer, while a neighbor two blocks away keeps one name the whole way through.
What one district name costs in 85122
A lookup that answers ZIP Code 85122 with one district name is right for one grade band and wrong for the other. Each band has one district for all 23,884 homes counted here, Casa Grande Elementary District for the early grades and Casa Grande Union High School District for high school, so the price of a one-name answer is not a share of the homes but a whole band: whichever name it gives, it is wrong for all 23,884 at the other level.
The districts that reach into 85122
The districts named above are not alike in size or in reach. Casa Grande Union High touches 15 ZIP Code areas in all and holds 23,884 homes inside this one; Casa Grande Elementary touches 6 areas. Not one of them is ever the only district in a ZIP Code area anywhere in the country: every postal area they touch, they share with somebody.
- Casa Grande Elementary District23,884 of 23,884 here · 6 ZIP areas in all
- Casa Grande Union High School District23,884 of 23,884 here · 15 ZIP areas in all
Where Casa Grande Elementary goes from here
Casa Grande Elementary District runs pre-K through grade 8, and it shares all 6 ZIP Code areas it touches with neighbors and is the only district in none of them. Inside its own boundary it holds 28,605 homes over 358 square miles; the part of it counted in ZIP Code 85122 is 23,884 of those. The district it shares the most postal ground with is Casa Grande Union High School District, across 6 ZIP Code areas. Its thinnest measured foothold is elsewhere: in ZIP Code area 85138 it holds 186 of 17,239 homes, or 1.1% of them.
How 85122 compares in Arizona
Across Arizona the boundary file names more than one district in 259 of the 409 ZIP Code areas it names a district for, 63% of them, and 72 areas in the state have no high school district named for part of their homes. Counting the districts named at either level, 143 areas in Arizona name more than this ZIP Code does and 150 name fewer. Nationally more than one district is named in 53% of 33,555 areas.
Look up 85122 again, or look up another ZIP Code
The lookup holds every ZIP Code area in the country with homes in it, including the ones with no page of their own. Opening it at 85122 recomputes the same 23,884 homes from the same snapshot, and typing five other digits answers for somewhere else. No server is asked for the answer: the whole index travels with the lookup page itself.
What to do next
Ask the district office to confirm your street address: look on its site for a school locator, a find my school tool or an attendance zone map, or call the office.
A ZIP Code is a set of mail delivery routes, not a boundary: one district covers every home counted in 85122, and even then the street is what enrolls a child, because magnet, charter and choice programs ignore the boundary entirely.
District websites and phone numbers here come from the NCES Common Core of Data directory, 2024-25 school year, filed under the same district ID as the Census boundary files. Where it lists no usable website, none is printed rather than guessed.
What this site can hand you instead:
If a house purchase depends on the answer, ask the district itself for written confirmation of that exact address. A listing is not a district record, and neither is this page.
Where these numbers come from
The homes were counted in the 2020 Census and the district lines are the 2026 boundary file, so a fast-growing area may have changed since; ZIP Codes here are the Census Bureau's ZIP Code Tabulation Areas; a share is a share of homes, not the chance that one address is in a district; and a district is not a school attendance zone. Every source, file and caveat is on the method page.